EP2981250B1 - Capsule with internal diaphragm - Google Patents
Capsule with internal diaphragm Download PDFInfo
- Publication number
- EP2981250B1 EP2981250B1 EP14720260.0A EP14720260A EP2981250B1 EP 2981250 B1 EP2981250 B1 EP 2981250B1 EP 14720260 A EP14720260 A EP 14720260A EP 2981250 B1 EP2981250 B1 EP 2981250B1
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- Prior art keywords
- diaphragm
- capsule
- compartment
- length
- ingredient
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
- A61K9/4808—Preparations in capsules, e.g. of gelatin, of chocolate characterised by the form of the capsule or the structure of the filling; Capsules containing small tablets; Capsules with outer layer for immediate drug release
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J3/00—Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms
- A61J3/07—Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms into the form of capsules or similar small containers for oral use
- A61J3/071—Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms into the form of capsules or similar small containers for oral use into the form of telescopically engaged two-piece capsules
Definitions
- This disclosure relates to capsules, for instance, gelatin-type capsules of the type commonly used for administering medicines, dietary supplements, etc.
- Capsules for holding medicines, dietary supplements, etc. are very well known and have been in commercial use for many years for human and veterinary use. They are typically made of a digestible gelatin-like material and contain a medicine in liquid or powder form or a dietary supplement, such as vitamins, fish oil, etc. in a single internal cavity (compartment). Moreover, such capsules are typically manufactured in certain standard sizes referred to as capsule size designated by numerals, such as 000, 00, etc. One of the most common sizes is the 00 capsule. This disclosure is generally of a capsule of 00 size, but this is not at all limiting but is merely illustrative. The typical 00 size capsule, in common with other capsules, has a standardized nominal volume.
- a 00 capsule has a volume of approximately 0.95 milliliters.
- the typical weight of such a typical capsule is 119 milligrams.
- Such capsules typically have two parts, a cap and a body, which are bonded together.
- the typical nominal length of the cap (along the long axis of the capsule) is 11.8 mm, plus or minus 0.4 mm.
- the length of the body (also as a separate component) is 20.2 mm plus or minus 0.4 mm.
- the overall assembled length of such a capsule is 23.5 mm plus or minus 0.4 mm.
- the outside diameter of the cap is typically 8.5 mm plus or minus 0.03 mm and the outside diameter of the body, which is slightly smaller than that of the cap, since typically the cap fits over the body when assembled, is 8.22 mm, plus or minus 0.03 mm.
- Other sizes of capsules each have their own nominal dimension
- Fig. 1 which is the sole figure in Netherlands patents No. 7,610,038 issued to Tapanahony N.V. on 13 March 1978 .
- This shows in a cross section such a two-compartment capsule 10 having a body 11, which defines a first chamber or compartment holding a first ingredient B.
- the inner wall of the body portion is indicated at 12.
- a diaphragm 16 Extending into the body is what may be referred to as a diaphragm 16, which includes a lower curved portion and which holds in a second compartment defined by its upper surface a second ingredient A.
- the inner surface of the diaphragm is indicated at 17.
- the cap 15 is shown as having a typical curved upper end and an inner surface 14.
- the upper end of the diaphragm is indicated at 13.
- ingredients A and B are different materials.
- a different two-compartment capsule is shown similarly in cross-section in present Fig. 2 from French patent No. 1,454,013 issued to Pluripharm on 22 nd of August 1966.
- the diaphragm 24 sidewalls extend all the way up to contact the inner surface of the cap 25 to contain ingredient D.
- a multi-chambered capsule for therapeutically substances is presented in the Dutch application No. 7610038 .
- the construction described in this application features a closed cover and forms a holder for therapeutically materials.
- an improved two-compartment capsule includes, as is conventional, a cap, diaphragm and body.
- the general configuration of this capsule is similar to those known in the field.
- certain particular dimensions an dimension parameters of the diaphragm relative to the body have been determined by them to be important to solve the above indicated technical deficiencies.
- a ratio of the length of the body of the capsule to the length of the diaphragm along the length axis of the entire capsule has been found to be optimized in a range of 2.0 to 2.9.
- the length of the diaphragm is approximately 8.5 mm and in the range of 7 to 10 mm.
- this ratio is 20.2 to 8.5, equal to approximately 2.37.
- this ratio and possibly the length would also apply, since some of the other capsules are significantly larger or smaller in terms of length.
- This ratio applies to capsules of various standard sizes, because, although the dimensions of width, length and height of the different standard size capsules vary from one standard size to the next, the width, length and height dimensions are generally scaled proportionally when comparing the dimensions of one standard capsule size to the next.
- a particular length of the sidewall contact region between the straight cylindrical walls of the diaphragm and the inner surface of the body has been found to be optimized at a length in the range of 4.5 to 7 mm. For a size 00 capsule, this sidewall contact region is approximately 6 mm in length.
- both the sidewall and rim of the diaphragm are sealed to the body.
- approximately 2.5 mm is the curved or hemispherical section and the remainder of the length is allocated to its straight sidewalls.
- This sidewall length acts as both a support and a sidewall seal. It has been found that if the length of this sidewall contact with the body is less than approximately 4.5 mm, the body-diaphragm seal is likely to fail.
- a ratio of the length of the diaphragm's sidewall contact area to the overall length of the body is approximately 6 mm to 20.2 mm, a ratio of approximately 0.3. Generally this ratio is in the range of 0.22 to 0.37.
- a range for this sidewall length for an exemplary capsule is 4.5 to 7.5 mm.
- FIGs. 3A and 3B show, respectively, a sectional side view of the body portion (body and diaphragm) of a capsule in accordance with the present invention and a sectional side view of the capsule, including the cap.
- FIGs. 1 and 2 show International application No. PCT/IB2012/055374 filed 5th October 2012 entitled “A Method and Apparatus for Manufacturing a Capsule” commonly invented with the present application.
- that disclosure does not indicate the particular dimensionality or certain other aspects of the capsule itself, which are disclosed herein.
- This international patent application and commonly invented International patent application PCT/IB2012/55372 filed 5 October 2012 entitled “A Method and Apparatus for Manufacturing Capsules” are both incorporated herein by reference in their entireties.
- Fig. 3A shows in a cross-sectional sideview the body portion 40 (without the cap) of a capsule in accordance with the present invention.
- This is typically in the form of a digestible hard gelatin capsule for holding a substance (ingredient) 42 such as fish oil in its lower compartment.
- a substance such as fish oil
- the ingredients may be wet or dry (powder or liquid) and may as usual include excipients (inactive carriers) which are wet or dry. Alternatively, at least one of the ingredients may be in a gaseous state.
- fluids such as fish oil must be held in a liquid-tight chamber 48 defined by the body 44.
- the lower chamber 48 includes in some embodiments in its upper portion a low-pressure (sub-atmospheric) gas which will not react with the ingredient 42, such as nitrogen gas.
- a low-pressure gas which will not react with the ingredient 42, such as nitrogen gas.
- certain ingredients and/or excipients are unstable and the non-reactive gas may be provided to preserve such unstable materials.
- Separating the lower compartment from the upper compartment is a diaphragm 50 made of a similar material as the body 44 (e.g., hard gelatin) and which is originally fabricated conventionally as a separate component from the body 44.
- body 44 is typically in the form of a hollow cylindrical tubular body defining its closed-end as indicated at the lower portion of the drawing and an opposed upper end 52 defined by the lower wall of the diaphragm 50.
- the upper end 56 of the capsule body portion assembly 40 is open here, that is not sealed off.
- Fig. 3B shows the fully assembled capsule 68 including the body portion of Fig. 3A with the addition of the cap 60 defining the upper chamber 64. Also shown is the second ingredient 70 (here illustrated as a powder but that is not limiting), located in the upper compartment 64.
- Fig. 3C shows relevant dimensions for one embodiment, in this case for a 00 capsule, for the capsule body portion of Fig. 3A , including the length of the body portion and diaphragm, the length of the sidewall contact area along the straight portions of the diaphragm and the body inner surface, and the other relevant parameters.
- Fig. 3C shows relevant dimensions for one embodiment, in this case for a 00 capsule, for the capsule body portion of Fig. 3A , including the length of the body portion and diaphragm, the length of the sidewall contact area along the straight portions of the diaphragm and the body inner surface, and the other relevant parameters.
- 3C shows the body portion after it is sealed to the diaphragm, where the sealing process creating the sealed region 72 slightly shortens the length of the body portion compared to that of the unsealed body 44 by itself. Again, this is for a 00 size capsule, which is merely illustrative.
- Figs. 4A , 4B and 4C respectively show examples of the three capsule components of Fig. 3B , which are the cap 60, the diaphragm 50 and the body 44 with exemplary dimensions, to illustrate these in disassembled form.
- the thickness of the wall of each component is conventionally about 0.2mm.
- various embodiments include (1) provision of the three separate capsule components shown in Figs. 4A , 4B , 4C ; (2) the body portion assembly of Fig. 3A , which shows the body portion filled; and the final assembled, sealed and (3) the filled capsule of Fig. 3B including the upper cap also affixed to the body portion and filled with the second ingredient 70.
- a ratio of the length of the body of the capsule (along its length axis), to the overall length of the diaphragm along the same axis is in the range of 2.0 to 2.9, with an exemplary ratio value of approximately 2.37. Again, while this is specifically applicable to the 00 type capsule, this ratio would also apply to other size capsules.
- the sidewall of the diaphragm which is the straight portion of the diaphragm, and which is cylindrical, extends along the inner surface of the body when the diaphragm is inserted into the body for a distance in the range of 4.5 to 7.5 mm, with an exemplary value of approximately 6 mm.
- the overall length of the diaphragm shown in exploded view in Fig. 4B , is in the range of 7 to 10 mm, again for a typical 00 size capsule with a central or exemplary length of approximately 8.5 mm.
- the nominal length of a 00 size capsule when fully assembled is approximately 23.5 mm.
- the ratio of the sidewall contact length of the diaphragm to the length of the body is approximately 6 mm to 20.2 mm, equal to approximately 0.3. A range of this ratio is approximately 0.22 to 0.37.
- the above parameters and dimensions provide the advantage that the capsule diaphragm, when inserted into the body, during the assembly of the capsule, does not rotate and preserves the capsule's sidewall integrity. Also, these components are configured such that the pressure of the insertion does not need to be too great, thereby preventing a rupture of the capsule during assembly. As noted above, these capsules are such that they are sealed under a certain amount of pressure by the sealing machinery that bonds their components together. Thus a goal here is that the sidewall contact area between the diaphragm and the body allows for optimum alignment of the diaphragm during insertion, resulting in an even edge at the top of the body/diaphragm mouth, providing a good seal both at the body perimeter and its sides.
- this sidewall contact provide adequate friction for the seal, in terms of the overall structure, integrity and robustness of the capsule.
- this configuration provides stability and adequate sidewall friction for the seal which advantageously allows for high volume manufacturing with small tolerances.
- the present sealing process typically includes an application of pressure and heat to bond the gelatin of the capsule components where they overlap, not just a friction fit.
- the sidewall friction is such that by itself it provides a level of orientation and stability in addition to that provided by the bonding of the components together.
Description
- This disclosure relates to capsules, for instance, gelatin-type capsules of the type commonly used for administering medicines, dietary supplements, etc.
- Capsules for holding medicines, dietary supplements, etc., are very well known and have been in commercial use for many years for human and veterinary use. They are typically made of a digestible gelatin-like material and contain a medicine in liquid or powder form or a dietary supplement, such as vitamins, fish oil, etc. in a single internal cavity (compartment). Moreover, such capsules are typically manufactured in certain standard sizes referred to as capsule size designated by numerals, such as 000, 00, etc. One of the most common sizes is the 00 capsule. This disclosure is generally of a capsule of 00 size, but this is not at all limiting but is merely illustrative. The typical 00 size capsule, in common with other capsules, has a standardized nominal volume. For instance, a 00 capsule has a volume of approximately 0.95 milliliters. The typical weight of such a typical capsule is 119 milligrams. Such capsules typically have two parts, a cap and a body, which are bonded together. The typical nominal length of the cap (along the long axis of the capsule) is 11.8 mm, plus or minus 0.4 mm. The length of the body (also as a separate component) is 20.2 mm plus or minus 0.4 mm. The overall assembled length of such a capsule is 23.5 mm plus or minus 0.4 mm. The outside diameter of the cap is typically 8.5 mm plus or minus 0.03 mm and the outside diameter of the body, which is slightly smaller than that of the cap, since typically the cap fits over the body when assembled, is 8.22 mm, plus or minus 0.03 mm. Other sizes of capsules each have their own nominal dimension
- Most such capsules only contain a single ingredient in a single compartment. However, it is known in the field to provide capsules which hold two ingredients in two separate compartments. These are used when the ingredients should not be mixed together inside the capsule. For an example of same see
Fig. 1 , which is the sole figure in Netherlands patents No.7,610,038 issued to Tapanahony N.V. on 13 March 1978 compartment capsule 10 having abody 11, which defines a first chamber or compartment holding a first ingredient B. The inner wall of the body portion is indicated at 12. Extending into the body is what may be referred to as adiaphragm 16, which includes a lower curved portion and which holds in a second compartment defined by its upper surface a second ingredient A. The inner surface of the diaphragm is indicated at 17. Thecap 15 is shown as having a typical curved upper end and aninner surface 14. The upper end of the diaphragm is indicated at 13. Typically ingredients A and B are different materials. - A different two-compartment capsule is shown similarly in cross-section in present
Fig. 2 from French patent No.1,454,013 body 23, which contains a first ingredient C and an upper compartment defined by thediaphragm 24 which contains the second ingredient D with thecap 25 extending over the outside of thebody p 23. Here thediaphragm 24 sidewalls extend all the way up to contact the inner surface of thecap 25 to contain ingredient D.
A multi-chambered capsule for therapeutically substances is presented in the Dutch application No.7610038 . The construction described in this application features a closed cover and forms a holder for therapeutically materials. - However, such two-compartment capsules are not believed to be in wide (if any) commercial use likely due to the difficulties of successfully making and filling same in large volume. The present inventors, moreover, have determined there are several technical deficiencies with these known two-compartment capsules. They identified two such aspects, which it is believed are not properly addressed up to now. One is during assembly of the capsule (when it is being filled with the ingredients) to provide proper alignment of the diaphragm that results in an even edge at the top of the capsule/diaphragm mouth, allowing for a good seal surface at both at the tops and the sides of the diaphragm. Further, the present inventors have determined that the sidewall contact between the diaphragm and the body in the prior art is not suitable to provide proper overall integrity and robustness of a capsule during filling and assembly of the capsule, as well as after filling and assembly of the capsule.
- Therefore, the present inventors have determined that an improved two-compartment capsule includes, as is conventional, a cap, diaphragm and body. The general configuration of this capsule is similar to those known in the field. However, certain particular dimensions an dimension parameters of the diaphragm relative to the body have been determined by them to be important to solve the above indicated technical deficiencies. Specifically, a ratio of the length of the body of the capsule to the length of the diaphragm along the length axis of the entire capsule has been found to be optimized in a range of 2.0 to 2.9. Specifically, in the case of a 00 size capsule having a body of approximately 20.2 mm long, the length of the diaphragm is approximately 8.5 mm and in the range of 7 to 10 mm. For such a capsule with a length of 8.5 mm, this ratio is 20.2 to 8.5, equal to approximately 2.37. For other capsule sizes, this ratio and possibly the length would also apply, since some of the other capsules are significantly larger or smaller in terms of length. This ratio applies to capsules of various standard sizes, because, although the dimensions of width, length and height of the different standard size capsules vary from one standard size to the next, the width, length and height dimensions are generally scaled proportionally when comparing the dimensions of one standard capsule size to the next. Further, a particular length of the sidewall contact region between the straight cylindrical walls of the diaphragm and the inner surface of the body has been found to be optimized at a length in the range of 4.5 to 7 mm. For a size 00 capsule, this sidewall contact region is approximately 6 mm in length.
- It was found that a shorter diaphragm (outside the above ranges) is unstable and thus tends to rotate inside the body during insertion of the diaphragm into the capsule, prior to capsule sealing. Such a shorter diaphragm does not hold sidewall integrity even after the diaphragm and body are bonded together and so the resulting capsule may not hold together. This instability is made worse after capsule filling, when the capsule is stored and shipped at different temperatures which may cause expansion of the air/gas/liquid inside the capsule resulting in stress on the capsule and the possibility of capsule leakage or rupture. Further, a much longer in length diaphragm (outside the above ranges) has been found to cause problems, especially when the lower compartment, defined between the diaphragm and the body, is filled with a liquid, topped off with a gas, in which case the pressure and sidewall friction of the diaphragm insertion becomes great and the internal pressure builds up, causing the likelihood of a rupture of the capsule during its assembly.
- So this particular configuration provides optimum alignment of the diaphragm during assembly which results in an even edge at the top of the capsule/diaphragm mouth along with a good seal surface both at the rim and the sides of the diaphragm. In one embodiment, both the sidewall and rim of the diaphragm are sealed to the body. Given this configuration, of the total length of the diaphragm, approximately 2.5 mm is the curved or hemispherical section and the remainder of the length is allocated to its straight sidewalls. This sidewall length acts as both a support and a sidewall seal. It has been found that if the length of this sidewall contact with the body is less than approximately 4.5 mm, the body-diaphragm seal is likely to fail. Of course, having too much at length of this sidewall contact area would severely reduce the volume at the lower portion that is the lower compartment of the capsule, thus reducing the capsule's utility. For the above described diaphragm with a length of 8.5 mm and sidewall that is 6 mm long (hence the length of the hemispherical portion of the diaphragm is 2.5 mm long), a ratio of the length of the diaphragm's sidewall contact area to the overall length of the body is approximately 6 mm to 20.2 mm, a ratio of approximately 0.3. Generally this ratio is in the range of 0.22 to 0.37. A range for this sidewall length for an exemplary capsule is 4.5 to 7.5 mm. Note that in accordance with the invention, the differences from a standard 00 (or other size) capsule lie in the diaphragm and its relationship to the body, whereas the cap is essentially conventional.
- Further features of the invention are described hereinafter by way of a non-limiting example of the invention, with reference to and as illustrated in the accompanying diagrammatic drawings. In the drawings:
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Fig. 1 shows in the prior art a cross-sectional view of a prior art two-compartment capsule. -
Fig. 2 shows in the prior art another version of a two-compartment capsule. -
Fig. 3A shows in accordance with the invention in a cross-sectional view the diaphragm and body of a two-compartment capsule with the lower compartment partly filled. -
Fig. 3B shows in a cross-sectional view the body portion of a capsule 3A with the cap portion also provided, andFig. 3C shows detail of theFig. 3B body portion. -
Figs. 4A ,4B and4C respectively show the cap, diaphragm and body of the capsule ofFig. 3B separately. - Present
Figs. 3A and3B show, respectively, a sectional side view of the body portion (body and diaphragm) of a capsule in accordance with the present invention and a sectional side view of the capsule, including the cap. These figures are respectively similar toFigs. 1 and2 of International application No.PCT/IB2012/055374 filed 5th October 2012 PCT/IB2012/55372 filed 5 October 2012 -
Fig. 3A shows in a cross-sectional sideview the body portion 40 (without the cap) of a capsule in accordance with the present invention. This is typically in the form of a digestible hard gelatin capsule for holding a substance (ingredient) 42 such as fish oil in its lower compartment. However, the nature of the ingredient held, of course, is not limiting and this is merely illustrative. The ingredients may be wet or dry (powder or liquid) and may as usual include excipients (inactive carriers) which are wet or dry. Alternatively, at least one of the ingredients may be in a gaseous state. Typically, of course, fluids such as fish oil must be held in a liquid-tight chamber 48 defined by thebody 44. Thelower chamber 48 includes in some embodiments in its upper portion a low-pressure (sub-atmospheric) gas which will not react with theingredient 42, such as nitrogen gas. Note that certain ingredients and/or excipients are unstable and the non-reactive gas may be provided to preserve such unstable materials. Separating the lower compartment from the upper compartment is adiaphragm 50 made of a similar material as the body 44 (e.g., hard gelatin) and which is originally fabricated conventionally as a separate component from thebody 44. Conventionally,body 44 is typically in the form of a hollow cylindrical tubular body defining its closed-end as indicated at the lower portion of the drawing and an opposedupper end 52 defined by the lower wall of thediaphragm 50. Theupper end 56 of the capsulebody portion assembly 40 is open here, that is not sealed off. -
Fig. 3B shows the fully assembledcapsule 68 including the body portion ofFig. 3A with the addition of thecap 60 defining theupper chamber 64. Also shown is the second ingredient 70 (here illustrated as a powder but that is not limiting), located in theupper compartment 64.Fig. 3C shows relevant dimensions for one embodiment, in this case for a 00 capsule, for the capsule body portion ofFig. 3A , including the length of the body portion and diaphragm, the length of the sidewall contact area along the straight portions of the diaphragm and the body inner surface, and the other relevant parameters.Fig. 3C shows the body portion after it is sealed to the diaphragm, where the sealing process creating the sealedregion 72 slightly shortens the length of the body portion compared to that of the unsealedbody 44 by itself. Again, this is for a 00 size capsule, which is merely illustrative. -
Figs. 4A ,4B and4C respectively show examples of the three capsule components ofFig. 3B , which are thecap 60, thediaphragm 50 and thebody 44 with exemplary dimensions, to illustrate these in disassembled form. The thickness of the wall of each component is conventionally about 0.2mm. - Assembling and filling single compartment capsules is well known in the field, as is manufacturing their components, so further details regarding this are not disclosed here. The above-referenced international applications describe ways to fill and bond together the components of such two-compartment capsules, but that is merely exemplary and other techniques can be used for filling and assembly, as known in the field. Hence the filling and sealing of the present capsules is not limited to the methods described in those international applications.
- Often the capsule filler organization does not fabricate its own capsule components, but in some cases they do. In other cases, these components are purchased by the filler organization. It is therefore contemplated that in accordance with the invention, various embodiments include (1) provision of the three separate capsule components shown in
Figs. 4A ,4B ,4C ; (2) the body portion assembly ofFig. 3A , which shows the body portion filled; and the final assembled, sealed and (3) the filled capsule ofFig. 3B including the upper cap also affixed to the body portion and filled with the second ingredient 70. - So as explained above, the relevant relationship and parameters of the present capsules is that in one aspect a ratio of the length of the body of the capsule (along its length axis), to the overall length of the diaphragm along the same axis is in the range of 2.0 to 2.9, with an exemplary ratio value of approximately 2.37. Again, while this is specifically applicable to the 00 type capsule, this ratio would also apply to other size capsules.
- In another aspect, the sidewall of the diaphragm which is the straight portion of the diaphragm, and which is cylindrical, extends along the inner surface of the body when the diaphragm is inserted into the body for a distance in the range of 4.5 to 7.5 mm, with an exemplary value of approximately 6 mm.
- In another aspect, the overall length of the diaphragm, shown in exploded view in
Fig. 4B , is in the range of 7 to 10 mm, again for a typical 00 size capsule with a central or exemplary length of approximately 8.5 mm. Again, note that the nominal length of a 00 size capsule when fully assembled (seeFig. 3B ) is approximately 23.5 mm. - Further, in another aspect, the ratio of the sidewall contact length of the diaphragm to the length of the body is approximately 6 mm to 20.2 mm, equal to approximately 0.3. A range of this ratio is approximately 0.22 to 0.37.
- As pointed out above, the above parameters and dimensions provide the advantage that the capsule diaphragm, when inserted into the body, during the assembly of the capsule, does not rotate and preserves the capsule's sidewall integrity. Also, these components are configured such that the pressure of the insertion does not need to be too great, thereby preventing a rupture of the capsule during assembly. As noted above, these capsules are such that they are sealed under a certain amount of pressure by the sealing machinery that bonds their components together. Thus a goal here is that the sidewall contact area between the diaphragm and the body allows for optimum alignment of the diaphragm during insertion, resulting in an even edge at the top of the body/diaphragm mouth, providing a good seal both at the body perimeter and its sides. Also, it is intended that this sidewall contact provide adequate friction for the seal, in terms of the overall structure, integrity and robustness of the capsule. Thus, this configuration provides stability and adequate sidewall friction for the seal which advantageously allows for high volume manufacturing with small tolerances. Note that the present sealing process typically includes an application of pressure and heat to bond the gelatin of the capsule components where they overlap, not just a friction fit. In the presently disclosed capsules, the sidewall friction is such that by itself it provides a level of orientation and stability in addition to that provided by the bonding of the components together.
- This disclosure is illustrative and not limited; further, modifications and improvements to the disclosed embodiments will be apparent to those skilled in the art in light of this disclosure, and are intended to fall within the scope of the pending claims.
Claims (15)
- A multi-compartment capsule (68) comprising:a body (44);a diaphragm (50) extending into the body (44) and defining a first compartment (48) between a first surface of the diaphragm (50) and the body (44), adapted to hold a first ingredient (42); anda cap (60) mounted to the body (44) and opposed to the diaphragm (50), and defining a second compartment (64) between an opposing surface of the diaphragm (50) and the cap (60), adapted to hold a second ingredient (70);wherein a sidewall of the diaphragm (50) extends along the body (44), and a curved portion of the diaphragm (50) is spaced apart from the body (44); andwherein a ratio of the length of the body (44) to the length of the diaphragm (50) is in the range of 2.0 to 2.9.
- The capsule (68) of Claim 1, wherein the ratio is about 2.37.
- The capsule (68) of Claim 1, wherein the sidewall of the diaphragm (50) extends along the body (44) a distance in the range of 4.5 to 7.5 mm.
- The capsule (68) of Claim 1, wherein the length of the diaphragm (50) is in the range of 7 to 10 mm.
- The capsule (68) of Claim 1, wherein the capsule (68) is about 23.5 mm in length.
- The capsule (68) of any one of the preceding claims, wherein the first compartment (48) is at least partly filled with the first ingredient (42) and the second compartment (64) is at least partly filled with the second ingredient (70).
- The capsule (68) of Claim 6, wherein at least one of the ingredients (42, 70) is in a liquid state.
- The capsule (68) of Claim 7, wherein the first ingredient (42) is in a liquid state, and a remaining portion of the first compartment (48) contains a gas other than air at sub-atmospheric pressure.
- The capsule (68) of any one of the preceding Claims, wherein the capsule (68) is of a digestible material.
- The capsule (68) of Claim 1, wherein a ratio of the length of the sidewall of the diaphragm (50) that extends along the body (44) to the length of the body (44) is in the range of 0.22 to 0.37.
- A kit of components which assemble to a multi-compartment capsule (68), the kit comprising:a body (44);a diaphragm (50) adapted to extend into the body (44) and thereby defining a first compartment (48) between a first surface of the diaphragm (50) and the body (44), adapted to hold a first ingredient (42); anda cap (60) adapted to mount to the body (44) and opposed to the diaphragm (50), and thereby defining a second compartment (64) between an opposing surface of the diaphragm (50) and the cap (60), adapted to hold a second ingredient (70);wherein a sidewall of the diaphragm (60) is straight and thereby when assembled extends along the body (44), and a curved portion of the diaphragm (50) extends from the sidewall and thereby when assembled is spaced apart from the body (44); andwherein a ratio of the length of the body (44) to the length of the diaphragm (50) is in the range of 2.0 to 2.9.
- A body portion (40) of a multi-compartment capsule (68), the body portion (40) comprising:a body (44); anda diaphragm (50) extending into the body (44) and defining a first compartment (48)between a first surface of the diaphragm (50) and the body (44), adapted to hold a first ingredient (42);wherein the body (44) and diaphragm (50) are adapted to receive a cap (60) mounted to the body (44) and opposed to the diaphragm (50), thereby defining a second compartment (64) between an opposing surface of the diaphragm (50) and the cap (60), adapted to hold a second ingredient (70);wherein a sidewall of the diaphragm (50) extends along the body (44), and a curved portion of the diaphragm (50) is spaced apart from the body (44); andwherein a ratio of the length of the body (44) to the length of the diaphragm (50) is in the range of 2.0 to 2.9.
- A method of assembling a multi-compartment capsule (68), comprising the acts of:providing a body (44);providing a diaphragm (50);inserting the diaphragm (50) into the body (44) thereby defining a first compartment (48) between a first surface of the diaphragm (50) and the body (44), adapted to hold a first ingredient (42);providing a cap (60):mounting the cap (60) to the body (44) and opposed to the diaphragm (50), thereby defining a second compartment (64) between an opposing surface of the diaphragm (50) and the cap (60), adapted to hold a second ingredient (70);wherein when assembled, a sidewall of the diaphragm (50) extends along the body (44), and a curved portion of the diaphragm (50) is spaced apart from the body (44); andwherein a ratio of the length of the body (44) to the length of the diaphragm (50) is in the range of 2.0 to 2.9.
- The method of Claim 13, further comprising:at least partially filling the first compartment (48) with the first ingredient (42), prior to inserting the diaphragm (50); andat least partially filling the second compartment (64) with the second ingredient (70), prior to mounting the cap (60).
- The capsule (68) of Claim 1, wherein a mouth of the body (44) and a mouth of the diaphragm (50) are in contact with each other and aligned to form an even edge.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/856,334 US9456987B2 (en) | 2013-04-03 | 2013-04-03 | Capsule with internal diaphragm |
PCT/IB2014/060399 WO2014162288A1 (en) | 2013-04-03 | 2014-04-03 | Capsule with internal diaphragm |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2981250A1 EP2981250A1 (en) | 2016-02-10 |
EP2981250B1 true EP2981250B1 (en) | 2021-01-27 |
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ID=50624898
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14720260.0A Active EP2981250B1 (en) | 2013-04-03 | 2014-04-03 | Capsule with internal diaphragm |
Country Status (7)
Country | Link |
---|---|
US (1) | US9456987B2 (en) |
EP (1) | EP2981250B1 (en) |
JP (1) | JP2016515607A (en) |
CN (1) | CN105705142B (en) |
AU (1) | AU2014246703B2 (en) |
CA (1) | CA2908216C (en) |
WO (1) | WO2014162288A1 (en) |
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US20140302133A1 (en) | 2014-10-09 |
AU2014246703A1 (en) | 2015-10-15 |
WO2014162288A1 (en) | 2014-10-09 |
CN105705142A (en) | 2016-06-22 |
AU2014246703B2 (en) | 2018-07-19 |
JP2016515607A (en) | 2016-05-30 |
CA2908216A1 (en) | 2014-10-09 |
US9456987B2 (en) | 2016-10-04 |
CN105705142B (en) | 2020-07-10 |
CA2908216C (en) | 2021-06-15 |
EP2981250A1 (en) | 2016-02-10 |
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